CN106125271B - Zoom short-throw projection camera lens and its Zooming method - Google Patents
Zoom short-throw projection camera lens and its Zooming method Download PDFInfo
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- CN106125271B CN106125271B CN201610699279.6A CN201610699279A CN106125271B CN 106125271 B CN106125271 B CN 106125271B CN 201610699279 A CN201610699279 A CN 201610699279A CN 106125271 B CN106125271 B CN 106125271B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/163—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
- G02B15/167—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses
- G02B15/17—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged +--
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/026—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using retaining rings or springs
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Lens Barrels (AREA)
Abstract
The present invention relates to a kind of zoom short-throw projection camera lenses, E is organized in rear fixation in the optical system of camera lens along light incident direction is equipped with positive light coke successively from left to right preceding fixed group A, the zoom group B of negative power, compensation group C, the iris diaphgram D of negative power and positive light coke, and preceding fixed group A includes the plano-convex positive lens A 1, crescent moon negative lens A 2, crescent moon positive lens A 3 set gradually from left to right；Zoom group B includes the double-concave negative lens B 1 set gradually from left to right, crescent moon positive lens B 2；Compensation group C includes crescent moon negative lens C 1, and fixed group E is constant afterwards relatively for the position of iris diaphgram D；Fixed group E includes the crescent moon positive lens E 1 set gradually from left to right, biconvex lens E 2, crescent moon negative lens E 3 and biconvex positive lens E 4 afterwards, the optical system structure of the zoom short-throw projection camera lens is simple, it can realize that clear projection, lens construction length are short to the object distance of 190mm.
Description
Technical field
The present invention relates to a kind of zoom short-throw projection camera lens and its Zooming methods.
Background technology
Current various Zooming-projection camera lens emerge one after another, but the projection object distance of current Zooming-projection camera lens is applied and is more than
One meter.When these projection lens are for object distance projection imaging within 200mm, because the influence of projection object distance, causes projection lens
The coma effect of head, cannot project clearly image, and the number of lenses of these projection lens is more, the assembly knot of eyeglass
Structure is complicated, and the not compact of lens construction causes volume larger, carries very inconvenient.
Invention content
The purpose of the present invention is being directed to the above shortcoming, a kind of compact assembling structure simple in structure, eyeglass is provided
Zoom short-throw projection camera lens and its Zooming method.
The technical scheme is that a kind of zoom short-throw projection camera lens, in the optical system of the camera lens along light from
From left to right incident direction is equipped with the compensation group of the preceding fixed group A of positive light coke, the zoom group B of negative power, negative power successively
C, the rear fixed group E of iris diaphgram D and positive light coke, fixed group A includes that the plano-convex that sets gradually from left to right is just saturating before described
Mirror A-1, crescent moon negative lens A-2, crescent moon positive lens A-3；The zoom group B includes the double-concave negative lens set gradually from left to right
B-1, crescent moon positive lens B-2；The compensation group C includes crescent moon negative lens C-1, and the position of the iris diaphgram D is fixed afterwards relatively
Group E is constant；Fixed group E includes that the crescent moon positive lens E-1, biconvex lens E-2, crescent moon set gradually from left to right is born thoroughly after described
Mirror E-3 and biconvex positive lens E-4.
Further, the airspace of short focus is 3.26mm, the air of focal length between the preceding fixed group A and zoom group B
Between be divided into 16.35mm, between the compensation group C and iris diaphgram D the airspace of short focus be 5.43mm, the airspace of focal length
For 1.90mm.
Further, the plano-convex positive lens A-1 and the centers crescent moon negative lens A-2 are close together, the crescent moon positive lens
E-1 and the centers biconvex lens E-2 are close together, the crescent moon negative lens A-2 and crescent moon positive lens A-3 compositions gluing unit, concave-concave
Negative lens B-1 forms gluing unit with crescent moon positive lens B-2 compositions gluing unit, biconvex lens E-2 and crescent moon negative lens E-3, described
18.52mm is divided between crescent moon negative lens E-3 and the center air of biconvex positive lens E-4, the biconvex positive lens E-4 arrives image planes
Airspace is 24.37mm, and the airspace of the plano-convex positive lens A-1 and crescent moon negative lens A-2 are 0.1mm, the crescent moon
The airspace of positive lens E-1 and biconvex lens E-2 are 0.1mm.
Further, the mechanical structure of the camera lens includes the focusing set gradually from left to right along the incident direction of light
Component, zoom component, compensation component, cam pack, iris component, fixed group A is set in focusing component before described, described
Zoom group B is set in zoom component, and the compensation group C is set in compensation component, and the iris diaphgram D and rear fixed group E are set to
In iris component.
Further, the iris component includes light bar seat, and the outside of the light bar seat is equipped with light bar motor, light bar
Potentiometer and to control the microswitch of light bar openings of sizes position, the microswitch is mounted on by light bar limiting bracket
On light bar seat, one end of the light bar seat is arranged with light bar rotating ring, and light is equipped between the light bar rotating ring and the end of light bar seat
Column piece, the light bar piece are fixed on through rivet interlacement, one end of light bar piece on light bar seat, and the other end is mounted on light bar rotating ring,
The light bar motor and light bar potentiometer are mounted on by light bar motor rack on light bar seat, are set on the output shaft of the light bar motor
There are light bar motor gear, the peripheral part of the light bar seat to be equipped with light bar regulation ring, light bar regulation ring is equipped with light bar regulation ring tooth
Wheel, the light bar motor gear adjust rim gear wheel with light bar and engage, and drive the rotation of light bar regulation ring, the light bar regulation ring is through light
Column regulation ring trim ring is fixed on light bar seat, and the light bar regulation ring dials nail connection, the light bar with light bar rotating ring by light bar
Light bar potentiometer gear is connected on potentiometer, the light bar potentiometer gear is engaged with light bar regulation ring, and the crescent moon is just saturating
Mirror E-1, biconvex lens E-2, crescent moon negative lens E-3 are set to the interior forward end of light bar seat, and the biconvex positive lens E-4 is set to
The Internal back end of light bar seat is equipped with spacer ring A, the biconvex positive lens between the crescent moon negative lens E-3 and biconvex positive lens E-4
E-4 is equipped with trim ring in the rear end of light bar seat, and spacer ring B, the light are equipped between the crescent moon positive lens E-1 and biconvex lens E-2
Light bar rotating ring trim ring is equipped between column rotating ring and light bar seat.
Further, the mechanical structure of the camera lens further includes body tube, and the zoom component includes being located at body tube
The zoom balladeur train in internal stage casing, the zoom balladeur train are internally provided with zoom lens barrel, and the zoom lens barrel is by being threadably mounted at
On zoom balladeur train；The compensation component includes the compensation balladeur train of the inside back segment positioned at body tube, the inside of the compensation balladeur train
Equipped with compensation lens barrel, the compensation lens barrel is by being threadably mounted on compensation balladeur train；The zoom balladeur train and compensation balladeur train are logical
It crosses and is fitted on body tube with body tube grinding, the external posterior segment of the body tube is equipped with zoom cam, the zoom
Cam is placed in by steel ball on body tube, to form rolling bearing, and is locked through bearing pressure ring and zoom cam trim ring；It is described
Offered on zoom cam by the optical zoom equation of motion requirement processing zoom, compensated curve slot, the zoom cam with
Zoom balladeur train, compensation balladeur train link together through zoom guide pin component and compensation guide pin component；The zoom guide pin component and benefit
Guide pin component is repaid to be made of zoom roller one, zoom lead ring, zoom guide pin, zoom roller two；The outside of the body tube is equipped with
Power zoom mechanism, the power zoom mechanism include zoom motor and microswitch two, and the zoom motor passes through zoom electricity
Machine support and zoom motor column are mounted on body tube, and the microswitch two is mounted on primary mirror by zoom limit switch frame
On cylinder；Zoom motor gear is connected on the output shaft of the zoom motor, the periphery of the zoom cam is equipped with the change of annular
Times cam wheel, the zoom motor gear are engaged with zoom cam wheel, and the body tube is equipped with two and becomes to limit
The interior forward end of times guide pin component, the straight trough for compensating guide pin component, the body tube is arranged with preceding group lens barrel, fixed group before described
A is mounted in preceding group lens barrel, and the front end of the plano-convex positive lens A-1 is equipped with preceding group of trim ring, the plano-convex positive lens A-1 and crescent moon
It is equipped with spacer ring C between negative lens A-2, preceding group of adjust pad, the zoom lens barrel are equipped between the preceding group lens barrel and body tube
Zoom adjust pad is equipped between zoom balladeur train, the zoom group B is mounted in zoom lens barrel, the double-concave negative lens B-1
Rear end be equipped with zoom trim ring, the crescent moon negative lens C-1 be mounted on compensation lens barrel in, the rear end of the crescent moon negative lens C-1
Equipped with compensation trim ring.
A kind of Zooming method of zoom short-throw projection camera lens, includes the following steps：
（1）The rotor of zoom motor does positive and negative rotary motion, and zoom cam is driven to correspondingly rotate；
（2）Zoom, compensated curve slot and zoom guide pin component, compensation guide pin component drive zoom balladeur train, compensation balladeur train to press
Zoom, the mode of compensated curve slot move, and under straight trough limitation, zoom balladeur train, the rotary motion for compensating balladeur train become straight line fortune
It is dynamic to carry out zoom.
Compared with prior art, the invention has the advantages that：（1）The optical system of the zoom short-throw projection camera lens
Simple in structure, the compact assembling structure of eyeglass, lens construction length is short, small easy to carry；（2）The zoom short-throw projection mirror
Head can realize the object distance of 190mm 2.1 times of continuous vari-focus, the aperture of camera lens reach F2.8, and MTF is more than in 60lp/mm
0.6；（3）Projecting ratio can be in 2.4~4.8 consecutive variations.
Description of the drawings
Patent of the present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the optical system schematic diagram of the inventive embodiments；
Fig. 2 is the mechanical structure schematic diagram of the inventive embodiments；
Fig. 3 is the structural schematic diagram one of the iris component of the inventive embodiments；
Fig. 4 is the structural schematic diagram two of the iris component of the inventive embodiments；
Fig. 5 is the structural schematic diagram three of the iris component of the inventive embodiments；
Fig. 6 be the zoom components of the inventive embodiments, compensation component structural schematic diagram one；
Fig. 7 be the zoom components of the inventive embodiments, compensation component structural schematic diagram two；
Fig. 8 be the zoom components of the inventive embodiments, compensation component structural schematic diagram three；
Fig. 9 is the structural schematic diagram of the straight trough of the inventive embodiments；
Figure 10 is image quality MTF figure of the inventive embodiments in short focus；
Figure 11 is image quality MTF figure of the inventive embodiments in focal length；
In figure：
Fixed group A before A-；B- zoom groups B；C- compensation groups C；D- iris diaphgrams D；Fixed group E after E-；A-1 plano-convex positive lens
A-1；A-2 crescent moon negative lenses A-2；A-3 crescent moon positive lens A-3；B-1 double-concave negative lens B-1；B-2 crescent moon positive lens B-2；The C-1 months
Tooth negative lens C-1；E-1 crescent moon positive lens E-1；E-2 biconvex lens E-2；E-3 crescent moon negative lenses E-3；E-4 biconvex positive lens E-
4；1- focusing components；2- zoom components；201- zoom balladeur trains；202- zoom lens barrels；3- compensation components；31- compensates balladeur train；32-
Compensate lens barrel；4- cam packs；5- iris components；51- light bar seats；52- light bar motors；53- light bar potentiometers；54- is micro-
Dynamic switch；55- light bar limiting brackets；56- light bar rotating rings；57- light bar pieces；58- light bar motor racks；59- light bar motor gears；
510- light bar regulation rings；511- light bars adjust rim gear wheel；512- light bar regulation ring trim rings；513- light bar potentiometer gears；514-
Spacer ring A；515- trim rings；516- spacer rings B；517- light bar rotating ring trim rings；6- body tubes；7- zoom cams；8- bearing pressure rings；9- becomes
Times cam trim ring；10- zooms roller one；11- zoom lead rings；12- zoom guide pins；13- zooms roller two；14- zoom motors；
15- microswitches two；16- zoom electric machine supports；17- zoom motor columns；18- zoom limit switch framves；19- zoom motor teeth
Wheel；20- zoom cam wheels；21- straight troughs；211- zoom straight troughs；212- compensates straight trough；22- preceding group lens barrels；Trim ring is organized before 23-；
24- spacer rings C；Adjust pad is organized before 25-；26- zoom adjust pads；27- zoom trim rings；28- compensates trim ring.
Specific implementation mode
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in Fig. 1~11, a kind of zoom short-throw projection camera lens, in the optical system of the camera lens from left to right along light
Incident direction is equipped with the compensation group C, variable of the preceding fixed group A of positive light coke, the zoom group B of negative power, negative power successively
The rear fixed group E of diaphragm D and positive light coke, before described a fixed group A include the plano-convex positive lens A-1 set gradually from left to right,
Crescent moon negative lens A-2, crescent moon positive lens A-3；The zoom group B includes the double-concave negative lens B-1 set gradually from left to right, the moon
Tooth positive lens B-2；The compensation group C includes crescent moon negative lens C-1, and the position relatively afterwards fixed group E of the iris diaphgram D is not
Become；Fixed group E includes the crescent moon positive lens E-1, biconvex lens E-2, crescent moon negative lens E-3 set gradually from left to right after described
With biconvex positive lens E-4.
In the present embodiment, the airspace of short focus is 3.26mm between the preceding fixed group A and zoom group B, focal length
Airspace is 16.35mm, and the airspace of short focus is 5.43mm, the air of focal length between the compensation group C and iris diaphgram D
Between be divided into 1.90mm, the airspace before described between fixed group A and zoom group B is zooming adjustment amount, the compensation group C with can
The airspace for becoming diaphragm D changes with the change in location of zoom group B to play the role of adjusting picture.
In the present embodiment, the plano-convex positive lens A-1 and the centers crescent moon negative lens A-2 are close together, and the crescent moon is just
Lens E-1 and the centers biconvex lens E-2 are close together, the crescent moon negative lens A-2 and crescent moon positive lens A-3 compositions gluing unit,
Double-concave negative lens B-1 forms gluing unit with crescent moon positive lens B-2 compositions gluing unit, biconvex lens E-2 and crescent moon negative lens E-3,
18.52mm, the biconvex positive lens E-4 to picture are divided between the crescent moon negative lens E-3 and the center air of biconvex positive lens E-4
The airspace in face is 24.37mm, and the airspace of the plano-convex positive lens A-1 and crescent moon negative lens A-2 are 0.1mm, described
The airspace of crescent moon positive lens E-1 and biconvex lens E-2 are 0.1mm.
In the present embodiment, the mechanical structure of the camera lens includes being set gradually from left to right along the incident direction of light
Focusing component 1, zoom component 2, compensation component 3, cam pack 4, iris component 5, fixed group A is set to focusing group before described
In part, the zoom group B is set in zoom component, and the compensation group C is set in compensation component, the iris diaphgram D and rear solid
Surely group E is set in iris component.
In the present embodiment, the iris component includes light bar seat 51, and the outside of the light bar seat is equipped with light bar electricity
Machine 52, light bar potentiometer 53 and to control the microswitch 54 of light bar openings of sizes position, the microswitch passes through light bar
Limiting bracket 55 is mounted on light bar seat, and one end of the light bar seat is arranged with light bar rotating ring 56, the light bar rotating ring and light bar
Light bar piece 57 is equipped between the end of seat, through rivet interlacement, one end of light bar piece is fixed on light bar seat the light bar piece, another
End is mounted on light bar rotating ring, and the light bar motor and light bar potentiometer are mounted on by light bar motor rack 58 on light bar seat, institute
The output shaft for stating light bar motor is equipped with light bar motor gear 59, and the peripheral part of the light bar seat is equipped with light bar regulation ring 510, light
Column regulation ring is equipped with light bar and adjusts rim gear wheel 511, and the light bar motor gear adjusts rim gear wheel with light bar and engages, and drives light bar
Regulation ring rotates, and the light bar regulation ring is fixed on through light bar regulation ring trim ring 512 on light bar seat, the light bar regulation ring and light
Column rotating ring dials nail connection by the light bar of preparation, and nail is dialled by light bar when light bar regulation ring is rotated with the drive of light bar motor
To also drive the rotation of light bar rotating ring, the light bar piece to realize the switching of openings of sizes, the light bar with the rotation of light bar rotating ring
Light bar potentiometer gear 513 is connected on potentiometer, the light bar potentiometer gear is engaged with light bar regulation ring, when aperture is with light
When the rotation of column regulation ring changes, keep light bar potentiometer corresponding with also generating by the transmission of light bar potentiometer gear
Rotation, light bar potentiometer resistance occur respective change, can take out corresponding potentiometer changing value by appropriate sample circuit, and pass
To control centre, to realize the display of stop opening size；Conversely, corresponding resistance value order is provided by control centre, it can
Realize the real-time control in light bar aperture, the crescent moon positive lens E-1, biconvex lens E-2, crescent moon negative lens E-3 are set to light bar
The interior forward end of seat, the biconvex positive lens E-4 are set to the Internal back end of light bar seat, the crescent moon negative lens E-3 and biconvex
It is equipped with spacer ring A514, the biconvex positive lens E-4 between positive lens E-4 and is equipped with trim ring 515, the crescent moon in the rear end of light bar seat
It is equipped with spacer ring B516 between positive lens E-1 and biconvex lens E-2, light bar rotating ring pressure is equipped between the light bar rotating ring and light bar seat
Circle 517.
In the present embodiment, the mechanical structure of the camera lens further includes body tube 6, and the zoom component includes being located at primary mirror
The zoom balladeur train 201 in the inside stage casing of cylinder, the zoom balladeur train are internally provided with zoom lens barrel 202, and the zoom lens barrel passes through
It is threadably mounted on zoom balladeur train；The compensation component includes the compensation balladeur train 31 of the inside back segment positioned at body tube, the benefit
That repays balladeur train is internally provided with compensation lens barrel 32, and the compensation lens barrel is by being threadably mounted on compensation balladeur train；The zoom balladeur train
With compensation balladeur train by being fitted on body tube with body tube grinding, the external posterior segment of the body tube is equipped with zoom
Cam 7, the zoom cam are placed in by steel ball on body tube, to form rolling bearing, and it is convex through bearing pressure ring 8 and zoom
Trim ring 9 is taken turns to lock；Zoom, the compensated curve of the requirement processing by the optical zoom equation of motion are offered on the zoom cam
Slot, the zoom cam link together with zoom balladeur train, compensation balladeur train through zoom guide pin component and compensation guide pin component；It is described
Zoom guide pin component is with compensation guide pin component by zoom roller 1, zoom lead ring 11, zoom guide pin 12,2 13 groups of zoom roller
At；The outside of the body tube is equipped with power zoom mechanism, and the power zoom mechanism includes zoom motor 14 and microswitch
2 15, the zoom motor is mounted on by zoom electric machine support 16 and zoom motor column 17 on body tube, and the fine motion is opened
Two are closed to be mounted on body tube by zoom limit switch frame 18；Zoom motor tooth is connected on the output shaft of the zoom motor
Wheel 19, the periphery of the zoom cam are equipped with the zoom cam wheel 20 of annular, the zoom motor gear and zoom cam tooth
Wheel engagement drives zoom cam to correspondingly rotate when the rotor of zoom motor does positive and negative rotary motion, by zoom, mends
It repays curved groove and zoom guide pin component, compensation guide pin component drives zoom balladeur train, compensation balladeur train by zoom, the side of compensated curve slot
Formula moves, and the body tube is equipped with two straight troughs 21 to limit zoom guide pin component, compensate guide pin component, and straight trough 21 divides
For zoom straight trough 211 and compensation straight trough 212, the rotary motion of zoom balladeur train, compensation balladeur train is made to become moving along a straight line, it is stringent to control
Matching between the straight trough on zoom guide pin component and the zoom of compensation guide pin component and zoom cam, compensated curve slot and body tube
Close gap, ensure zoom component and compensation component sliding it is steady, without cassette tape, pass through the rotation of zoom motor and realize zoom component and benefit
It repays component and does linear motion back and forth by zoom motion equation requirement, it is described to realize the consecutive variations function of system focal length
The interior forward end of body tube is arranged with preceding group lens barrel 22, and fixed group A is mounted in preceding group lens barrel before described, the plano-convex positive lens
The front end of A-1 is equipped with preceding group of trim ring 23, described equipped with spacer ring C24 between the plano-convex positive lens A-1 and crescent moon negative lens A-2
It is equipped with preceding group of adjust pad 25 between preceding group lens barrel and body tube, zoom is equipped between the zoom lens barrel and zoom balladeur train and is adjusted
Gasket 26, the zoom group B are mounted in zoom lens barrel, and the rear end of the double-concave negative lens B-1 is equipped with zoom trim ring 27, described
Crescent moon negative lens C-1 is mounted in compensation lens barrel, and the rear end of the crescent moon negative lens C-1 is equipped with compensation trim ring 28.
A kind of Zooming method of zoom short-throw projection camera lens, includes the following steps：
（1）The rotor of zoom motor does positive and negative rotary motion, and zoom cam is driven to correspondingly rotate；
（2）Zoom, compensated curve slot and zoom guide pin component, compensation guide pin component drive zoom balladeur train, compensation balladeur train to press
Zoom, the mode of compensated curve slot move, and under straight trough limitation, zoom balladeur train, the rotary motion for compensating balladeur train become straight line fortune
It is dynamic to carry out zoom.
In the present embodiment, the optical system being made of above-mentioned lens set has reached following optical index：
（1）24 ~ 50.8mm of focal length becomes multiplying power as 2.1；
（2）Projection objective is 190mm；
（3）Aperture is F/#=2.8；
（4）Target surface size is Φ 14；
（5）Image quality is that MTF is more than 0.6 in 66lp/mm；
（6）It is applicable in spectral line range：450nm~700nm.
Above-listed preferred embodiment, has been further described the object, technical solutions and advantages of the present invention, is answered
Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (4)
1. a kind of zoom short-throw projection camera lens, it is characterised in that：It is incident from left to right along light in the optical system of the camera lens
Direction is equipped with compensation group C, the iris diaphgram D of the preceding fixed group A of positive light coke, the zoom group B of negative power, negative power successively
With the rear fixed group E of positive light coke, a fixed group A includes that the plano-convex positive lens A-1 set gradually from left to right, crescent moon are negative before described
Lens A-2, crescent moon positive lens A-3；The zoom group B includes that the double-concave negative lens B-1, the crescent moon that set gradually from left to right are just saturating
Mirror B-2；The compensation group C includes crescent moon negative lens C-1, and fixed group E is constant afterwards relatively for the position of the iris diaphgram D；It is described
Fixed group E includes crescent moon positive lens E-1, biconvex lens E-2, crescent moon negative lens E-3 and the biconvex set gradually from left to right afterwards
Positive lens E-4；The airspace of short focus is 3.26mm between fixed group A and zoom group B before described, and the airspace of focal length is
16.35mm, the airspace of short focus is 5.43mm between the compensation group C and iris diaphgram D, and the airspace of focal length is
1.90mm；The plano-convex positive lens A-1 and the centers crescent moon negative lens A-2 are close together, the crescent moon positive lens E-1 and lenticular
The centers mirror E-2 are close together, the crescent moon negative lens A-2 and crescent moon positive lens A-3 compositions gluing unit, double-concave negative lens B-1 with
Crescent moon positive lens B-2 compositions gluing unit, biconvex lens E-2 and crescent moon negative lens E-3 form gluing unit, the crescent moon negative lens E-
18.52mm is divided between the center air of 3 and biconvex positive lens E-4, the airspace of biconvex positive lens E-4 to the image planes is
The airspace of 24.37mm, the plano-convex positive lens A-1 and crescent moon negative lens A-2 be 0.1mm, the crescent moon positive lens E-1 and
The airspace of biconvex lens E-2 is 0.1mm；The Zooming method of zoom short-throw projection camera lens includes the following steps：（1）Zoom electricity
The rotor of machine does positive and negative rotary motion, and zoom cam is driven to correspondingly rotate；（2）Zoom, compensated curve slot and zoom guide pin
Component, compensation guide pin component drive zoom balladeur train, compensation balladeur train to be moved in the way of zoom, compensated curve slot, are limited in straight trough
Under, zoom balladeur train, the rotary motion for compensating balladeur train become linear motion and carry out zoom.
2. zoom short-throw projection camera lens according to claim 1, it is characterised in that：The mechanical structure of the camera lens includes edge
Focusing component that the incident direction of light is set gradually from left to right, zoom component, compensation component, cam pack, iris
Component, fixed group A is set in focusing component before described, and the zoom group B is set in zoom component, and the compensation group C, which is set to, to be mended
It repays in component, the iris diaphgram D and rear fixed group E are set in iris component.
3. zoom short-throw projection camera lens according to claim 2, it is characterised in that：The iris component includes light bar
The outside of seat, the light bar seat is equipped with light bar motor, light bar potentiometer and is opened to the fine motion for controlling light bar openings of sizes position
It closing, the microswitch is mounted on by light bar limiting bracket on light bar seat, and one end of the light bar seat is arranged with light bar rotating ring,
Light bar piece is equipped between the light bar rotating ring and the end of light bar seat, for the light bar piece through rivet interlacement, one end of light bar piece is solid
It is scheduled on light bar seat, the other end is mounted on light bar rotating ring, and the light bar motor and light bar potentiometer are pacified by light bar motor rack
On light bar seat, the output shaft of the light bar motor is equipped with light bar motor gear, and the peripheral part of the light bar seat is equipped with light
Column regulation ring, light bar regulation ring are equipped with light bar and adjust rim gear wheel, and the light bar motor gear adjusts rim gear wheel with light bar and engages,
The rotation of light bar regulation ring, the light bar regulation ring is driven to be fixed on light bar seat through light bar regulation ring trim ring, the light bar is adjusted
Ring dials nail connection with light bar rotating ring by light bar, and light bar potentiometer gear, the light bar electricity are connected on the light bar potentiometer
Position device gear is engaged with light bar regulation ring, and the crescent moon positive lens E-1, biconvex lens E-2, crescent moon negative lens E-3 are set to light
The interior forward end of column seat, the biconvex positive lens E-4 are set to the Internal back end of light bar seat, the crescent moon negative lens E-3 with it is double
It is equipped with spacer ring A, the biconvex positive lens E-4 between convex positive lens E-4 and is equipped with trim ring in the rear end of light bar seat, the crescent moon is just saturating
It is equipped with spacer ring B between mirror E-1 and biconvex lens E-2, light bar rotating ring trim ring is equipped between the light bar rotating ring and light bar seat.
4. zoom short-throw projection camera lens according to claim 3, it is characterised in that：The mechanical structure of the camera lens further includes
Body tube, the zoom component include the zoom balladeur train positioned at the inside stage casing of body tube, and the zoom balladeur train is internally provided with
Zoom lens barrel, the zoom lens barrel is by being threadably mounted on zoom balladeur train；The compensation component includes positioned at the interior of body tube
The compensation balladeur train of portion's back segment, the compensation balladeur train are internally provided with compensation lens barrel, and the compensation lens barrel is mended by being threadably mounted at
It repays on balladeur train；The zoom balladeur train is fitted to by being ground with body tube on body tube with compensation balladeur train, the primary mirror
The external posterior segment of cylinder is equipped with zoom cam, and the zoom cam is placed in by steel ball on body tube, to form rolling bearing,
And it is locked through bearing pressure ring and zoom cam trim ring；It offers on the zoom cam and adds by the requirement of the optical zoom equation of motion
The zoom of work, compensated curve slot, the zoom cam is with zoom balladeur train, compensation balladeur train through zoom guide pin component and compensation guide pin group
Part links together；The zoom guide pin component is with compensation guide pin component by zoom roller one, zoom lead ring, zoom guide pin, change
Times roller two forms；The outside of the body tube is equipped with power zoom mechanism, the power zoom mechanism include zoom motor with
Microswitch two, the zoom motor are mounted on by zoom electric machine support and zoom motor column on body tube, the fine motion
Switch two is mounted on by zoom limit switch frame on body tube；Zoom motor tooth is connected on the output shaft of the zoom motor
Wheel, the periphery of the zoom cam are equipped with the zoom cam wheel of annular, and the zoom motor gear is nibbled with zoom cam wheel
Close, the body tube be equipped with two to limit zoom guide pin component, compensate guide pin component straight trough, the body tube it is interior
Portion's front end sleeve is equipped with preceding group lens barrel, and fixed group A is mounted in preceding group lens barrel before described, and the front end of the plano-convex positive lens A-1 is set
There is preceding group of trim ring, spacer ring C, the preceding group lens barrel and body tube are equipped between the plano-convex positive lens A-1 and crescent moon negative lens A-2
Between be equipped with preceding group of adjust pad, zoom adjust pad, zoom group B peace are equipped between the zoom lens barrel and zoom balladeur train
In zoom lens barrel, the rear end of the double-concave negative lens B-1 is equipped with zoom trim ring, and the crescent moon negative lens C-1, which is mounted on, to be mended
It repays in lens barrel, the rear end of the crescent moon negative lens C-1 is equipped with compensation trim ring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610699279.6A CN106125271B (en) | 2016-08-22 | 2016-08-22 | Zoom short-throw projection camera lens and its Zooming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610699279.6A CN106125271B (en) | 2016-08-22 | 2016-08-22 | Zoom short-throw projection camera lens and its Zooming method |
Publications (2)
| Publication Number | Publication Date |
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| CN106125271A CN106125271A (en) | 2016-11-16 |
| CN106125271B true CN106125271B (en) | 2018-07-27 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772886A (en) * | 2016-12-29 | 2017-05-31 | 中国科学院西安光学精密机械研究所 | Electronic iris diaphragm mechanism of adjusting luminance |
| CN107015352B (en) * | 2017-05-26 | 2023-03-24 | 福建师范大学 | Four-component two-action LCOS projection zoom lens and zooming method |
| CN107315238B (en) * | 2017-08-17 | 2019-10-25 | 福建福光股份有限公司 | A kind of high-resolution zoom camera lens |
| CN110412756A (en) * | 2019-08-13 | 2019-11-05 | 福建福光天瞳光学有限公司 | Non-refrigeration type long-wave infrared continuous zoom lens and adjusting method |
| CN112367442B (en) * | 2020-10-29 | 2022-07-15 | 维沃移动通信有限公司 | Camera lens assembly and electronic equipment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6060617A (en) * | 1983-09-14 | 1985-04-08 | Asahi Optical Co Ltd | Telephoto zoom lens system |
| JP2008040032A (en) * | 2006-08-04 | 2008-02-21 | Casio Comput Co Ltd | Zoom lens and projection device |
| JP4914991B2 (en) * | 2006-08-15 | 2012-04-11 | ペンタックスリコーイメージング株式会社 | Telephoto zoom lens system |
| JP4963048B2 (en) * | 2006-09-04 | 2012-06-27 | 株式会社リコー | Zoom lens, camera device, and portable information terminal device |
| CN102608732B (en) * | 2011-12-22 | 2013-09-04 | 福建福光数码科技有限公司 | Large-view-field high-resolution high-rate vehicle-mounted zoom pick-up lens |
| CN105116526B (en) * | 2015-09-21 | 2017-08-25 | 福建福光股份有限公司 | High zoom ratio continuous vari-focus telephotography camera lens and its control method |
| CN206002761U (en) * | 2016-08-22 | 2017-03-08 | 福建福光股份有限公司 | Zoom short-throw projection camera lens |
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